Internal-combustion engine.



PATENI'ED JULY 18, 1905.

C. B. SARGENT. INTERNAL COMBUSTION ENGINE.-

APPLICATION FILED MAR. 21. 1904.

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C. E. SARGENT. INTERNAL COMBUSTION ENGINE.

APPLIOATION TILED MAR. 21. 1904.

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APPLICATION FILED MAR.21.1904.

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INTERNAL COMBUSTION ENGINE. APPLICATION FILED MAB.21.1904.

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Unrren STATES Patented July 18, 1905.

PATENT Orricrj.

CHARLES E. SARGENT, OF CHICAGO, ILLINOIS, ASSIGNOR TO SARGENT ENGINEERING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK.

INTERNAL-COMBUSTION ENGINE.

SPECIFICATION forming part of Letters Patent No. 795,236, dated July 18, 1905.

Application filed March 21, 1904.. Serial No. 199,090.

To all whom it may concern.-

Be it known that I, CHARLES E. SARGENT, a citizen of the United States, residing at Chicago, in the county of Cool; and State of Illinois, have invented new and useful Improvements in Internal Combustion Engines, of which the following is a specification.

My invention relates to internal-combustion engines, and particularly to their cylinders, their supports, and the means for supplying air and fuel thereto.

For illustration I have chosen adouble-acting engine having two tandem cylinders supplied with air and gas through a hollow base and hollow cylinder-supporting legs rising from the base and having their heads of somewhat novel form;

By the peculiar construction a slight decrease in the total length is secured, much piping is eliminated, and various other advantages are obtained.

In the accompanyingdrawings, Figure 1 is a side elevation of so much of the actual apparatus employed as is necessary to an understanding of the invention. Fig. 2 is a plan view of a certain base. Fig. 3 is an end elevation of an engine-cylinder and its support- Fig. 4: is a side elevation, partly in section, showing union of the heads and a certain distance-piece between the two cylinders and also means for compensating unequal expansion. Fig. 5 is a side sectional elevation. Fig. 6 is a cross-section through the legs, showing how the air and gas pass to the engine and the means for controlling their flow.

In the figures, A and A represent two tandem engine-cylinders rigidly connected by a distance-piece A with a cross-head guide and frame A supporting a crank-shaft A5 The frame A rests upon and is rigidly connected to a hollow base A which extends beneath both cylinders. The ends of each cylinder are supported by hollow legs A, which are bolted or otherwise rigidly fixed to the base in such positions that the passages within them register with openings in the upper wall of the base. The subbase is longitudinally divided by a partition A and the two compartments thus formed extend the full length of the two cylinders and are supplied with gas and air, respectively, through conduits B and B. At its upper end each leg communicates with a passage A leading to an admission-valve A without novelty herein claimed, and there being such legs at each end of each cylinder the four explosion-chambers maybe thus supplied with combustible charges. Within the legs are valves C, by means of which the flow through the passage may at will be cut off. Each valve C is normally open, but is closed when desired by means of a hand-lever C, acting through links C", arms C C rock-shafts (3* C and arms C C. An exhaust-pipe D passes out from each end of each cylinder and leads by a long gentle curve to any suitable point of discharge.

The cylinders are supported by the legs and are held in alinement laterally by the legs, the distance-piece, and the cross-head guide and frame. They are prevented from rising by a dovetail piece H, secured to their lower sides and engaging the parts below in such manner as to allow longitudinal expansion of the cylinders. Each cylinder contains a piston I, and these have a common piston-rod I and are connected with the crank-shaft in the usual way.

WVhat I claim is 1. In apparatus of the class described, the combination with a suitable frame, enginecylinder, piston and piston-rod, of a base, legs rising from the base and supporting the cylinder, and devices securing the cylinder to the legs yet permitting free endwise movement of the cylinder upon the legs under the force of expansion and contraction.

2. In apparatus of the class described, the combination with an engine-cylinder, a base below the same, cylinder-supporting legs secured to the base, and means for holding the cylinder down upon the legs while permitting free longitudinal movement with reference to the latter as the cylinder expands and contracts.

3. In apparatus of the class described, the combination with an engine-cylinder, of a hollow base below the cylinder, hollow cylindersupporting legs rising from the base and arranged to deliver combustible gas to the admission-valve, means for supplying such gas to the base and means for holding the cylinder down upon the legs while permitting it to move on the latter in expanding and con tracting.

4:. In apparatus of the class described, the combination with an engine-cylinder, of a hollow base, below the cylinder, divided into two compartments, means for supplying air to one compartment and combustible gas to the other, hollow cylinder-supporting legs arranged to conduct air and gas from said base to said cylinder and means for securing the cylinder upon the legs while permitting it to slide longitudinally thereon in expanding and contracting.

5. In apparatus of the class described, the combination with a cylinder, of a hollow base divided into two compartments, means for supplying air and gas to the two compartments, respectively, hollow, cylinder-supporting legs leading from each compartment to each end of the cylinder, and valves controlling the passages in said legs, respectively.

6. In apparatus of the class described, the combination with tandem cylinders, of a hollow, closed base extending from end to end of the combined cylinders and divided longitudinally into non-communicating air and gas compartments, hollow legs secured to the base under each end of each cylinder, respectively, and forming conduits leading, on one side from the air-chamber and on the other side from the gas-chamber of the base to the corresponding end of one of the cylinders, and valves for cutting off at will each pair of air and gas conduits.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES E. SARGENT.

Witnesses:

FRED L. KRINMEY, O. E. BECK. 

